Snort mailing list archives
Re: IP Header Data Type Preference
From: "Paul B. Poh" <paul () paulpoh com>
Date: Fri, 16 May 2003 17:12:13 -0400
I personally prefer to use an INT. It's a tiny bit more efficient as far as disk usage. And it's allow a bit more efficient to index and sort on.
In general, I believe it's better practice to store the actual data type.The dotted notation is simply a human-convinience of the actual 32bit ip address. For example, 192.165.5.50 is actually the four octets that translate to C0:A8:05:32 and C0A80532 is hex for 3232236850 (the decimal representation).
This link contains a nice simple useful ip address converter for the math impaired :-)
http://www.telusplanet.net/public/sparkman/netcalc.htm Paul. David Markle wrote:
I need some advice on IP Header Data types with a database, say MySQL. The MySQL snort database defines IP address information as INT (integer) (i.e. ip_src/ip_dst in the iphdr table). Is there a computational benefit to this within the database or does it really matter. For example, I could define ip_src (source IP Address) as CHAR(15) rather than INT. This would preserve the quad dotted notation in the address. The INT definition does not preserve this. I guess this is my problem. If the field does not preserve the dotted notation, how is it addressed in processing ??? Short uses INT field definitions for ip_src and ip_dst in the iphdr table. How is it ultimately references as xxx.xxx.xxx.xxx after its placed into the database ??? Thanks in advance. dm
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Current thread:
- Hi, Derek Sherred (May 15)
- Re: Hi, Jason Boykin (May 15)
- Re: Hi, Erek Adams (May 15)
- Re: Hi, David Alonso De La Vega Tapage (May 16)
- IP Header Data Type Preference David Markle (May 16)
- Re: IP Header Data Type Preference Paul B. Poh (May 16)
- Re: IP Header Data Type Preference Brian (May 16)
- Re: IP Header Data Type Preference Michael L. Artz (May 18)
- IP Header Data Type Preference David Markle (May 16)